The MID BT Series ID-Mounted Pipe Beveling Machine is a robust and versatile tool designed for precise pipe preparation, offering a range of models (BT1, BT3, BT6, BT8, BT14) to accommodate various pipe dimensions and operational needs. It is available with both air and electric drive options, ensuring adaptability to different work environments.
Function Description
The BT Series machine is primarily used for ID-mounted pipe beveling, facing, and internal beveling. Its core function is to prepare pipe ends for automatic welding by creating V and U welding seams with high precision. The cutter head is designed to hold up to three tool bits simultaneously, which is crucial for achieving accurate beveling, facing, and internal beveling in a single operation, especially for automatic welding requirements.
Important Technical Specifications
The BT Series offers a range of models with varying performance capabilities:
Working Range (ID to OD):
- BT1: 16-33.4mm (0.62-1.3")
- BT3: 25-88.9mm (1-3.5")
- BT6: 60-168.2mm (2.3-6.5")
- BT8: 65-219.0mm (2.5-8.6")
- BT14: 145-355.6mm (5.7-14")
Wall Thickness:
- BT1: ≤8mm (≤0.3")
- BT3: ≤15mm (≤0.6")
- BT6, BT8, BT14: ≤20mm (≤0.78")
Rotation Speed:
- Pneumatic:
- BT1, BT3: 0-66RPM
- BT6: 0-61RPM
- BT8: 0-50RPM
- BT14: 0-18RPM
- Electric:
- BT1, BT3, BT6: 0-65RPM
- BT8: 0-24RPM
- BT14: 0-20RPM
Drive Options:
- Air Requirement: 900-1500L per minute @ 0.6/0.7Mpa
- Recommended air pressure: 90PSI (6.2BAR)
- Recommended volume: 30CFM (0.9m³/Min) for BT1, BT3, BT6; 41CFM (1.2m³/Min) for BT8, BT14
- Electric Requirement: 120V60HZ
- Electric motor options: BOSH 1.38HP (1.05kw) 60HZ, 120V; 1.6HP (1.2kw) 60HZ; 2HP (1.5kw) 60HZ
Machine Weight (Complete):
- Pneumatic: BT1 (7kgs/15.4lbs), BT3 (8.5kgs/18.7lbs), BT6 (16kgs/35.2lbs), BT8 (26kg/57.2lbs), BT14 (46kgs/101.2lbs)
- Electric: BT1 (8kgs/17.6lbs), BT3 (9kgs/19.8lbs), BT6 (17kgs/37.4lbs), BT8 (28kg/61.6lbs), BT14 (48kg/105.6lbs)
Dimensions (L x W x H):
- BT1, BT3: 540x410x170mm (21"x16"x6.7")
- BT6: 560x550x250mm (22"x21.6"x10")
- BT8: 650x280x250mm (22"x11"x10")
- BT14: 830x430x410mm (32.6"x17"x16")
Tooling:
- Facing Tools: Material AISI M42, various widths (22mm, 25mm) and thicknesses (6mm, 8mm, 10mm) for different models.
- Beveling Tools: Material AISI M42, various widths (22mm, 25mm) and thicknesses (6mm, 8mm, 10mm) with different beveling angles (30°, 37.5°, and custom 'a' angles).
- Inner Beveling Tools: Material AISI M42, various widths (22mm, 25mm) and thicknesses (8mm, 10mm) with different beveling angles (12°, 15°, and custom 'a' angles).
- Special applications for inconel, duplex, etc., require consultation.
Usage Features
Fast Setup:
- The machine is designed for quick installation and operation, allowing setup from its storage case to the pipe in approximately one minute.
- An expanding nut facilitates rapid installation.
- A universal three-leg chuck automatically centers the machine in the pipe I.D. with a single adjustment.
- Tool bits can be installed and adjusted in seconds.
- The machine can be installed in any direction: horizontal, vertical, or slanted.
Easy Operation:
- Miniaturized design makes it suitable for low-clearance applications.
- Ratchet wheel design for tool feed simplifies operation, absorbs torque, reduces operator fatigue, and enhances safety.
- In-feed structure includes a scale for precise measurement.
Typical Function Design:
- Features an aluminum housing for lightweight construction.
- Capable of machining V and U welding seams.
- High-strength mandrel and large-area expanding block enhance rigidity.
- Supports simultaneous work on pipes with two or three bevel tools installed on the cutter.
Operation Procedure:
- Measure ID and Choose Expanding Block: Select the appropriate expanding block based on the pipe's ID, fix it on the wedge block, and tighten.
- Install Tool Bit: Install the proper tool bit on the cutter, ensuring it is clockwise. Caution: The tool bit must not touch the spindles to avoid machine damage.
- Center and Secure Machine: Back the tool bit travel using the hand wheel or ratchet spanner. Insert the expandable mandrel into the pipe, lightly fasten the expansion nut, and shake the machine to center it and ensure proper contact with the pipe ID. Then, fasten the expansion nut tightly to secure the equipment and pipe. Caution: The mandrel should not be inserted too deep; a 2-3mm distance from the tool bit to the pipe end high point is recommended.
- Initial Rotation and Contact: Turn the motor on and off briefly to ensure correct installation of the machine and tool bit. Then, turn on the motor and manually rotate the tool feed hand wheel (or ratchet spanner) until the tooling contacts the pipe.
- Caution: Feed the tool bit manually with an even motion.
- Spray coolant (saponification oil) continuously for smooth beveling and prolonged tool bit life.
- Sharpen or replace dull tool bits.
- Prevent scrap-iron from entering the motor.
- Completion and Removal: After beveling, back the tool bit travel first, then turn off the motor, loosen the expansion nut, and remove the machine. Caution: Failure to back the tool bit first may damage the feed wheel and cause the expansion nut and feed wheel to get stuck.
- Continuous Processing: For same-size pipes, the machine can be moved to the next pipe without adjusting the tool bit again; only back the tool bit travel, loosen the expansion nut, and fix it on the new pipe. Caution: Do not let the machine slip into the pipe when loosening the expansion nut or adjusting its location, as this may damage the tool blade.
Maintenance Features
General Maintenance:
- Carbon Brush: Check wear condition after 100 working hours and replace if needed (when worn 2/3) to prevent motor damage. Do not adjust the carbon brush as it is pre-adjusted.
- Tool Bit: Sharpen or replace dull tool bits immediately to prevent increased bevel resistance and damage to spline shaft, motor, and reducer parts. Dull tool bits can cause the motor to stop if feed is too fast.
- Coolant: Continuously spray coolant (saponification oil) during operation for smooth beveling and extended tool bit life.
- Pipe Preparation: Remove rough edges and incidentals from flame-cut pipes before beveling. Start at the high point and feed carefully if the pipe end surface has bumps or holes.
- Small Tube Work: Use a bench clamp or other tool to fix small-sized tubes.
- Feed Speed Control: For BT6 and BT14 models using a ratchet spanner, control the feed speed carefully to avoid machine damage from excessive feeding.
- Motor Stoppage: If the motor stops due to a dull tool bit or fast feed, immediately cut off the power supply to prevent motor damage.
Pneumatic Series Specific Notes:
- Compressed Air Quality: Requires dehydrated and filtered air.
- Air Treatment: Use an air filter, regulator, and atomized lubricator (FRL system) to ensure compressed air is dry and clean, preventing rust and damage to the air motor. The atomized lubricator lubricates the air motor internals.
- Lubrication (without FRL system): If an FRL system is not available, add lubricating oil (engine oil and kerosene 1:1) at the air inlet before and after each use, and regularly clean motor parts. This is a temporary remedy; an FRL system is recommended for proper air motor maintenance.
- Cutter Stoppage: If the tool feed speed is too fast or air pressure is low, causing the cutter to stop, turn off the air valve and immediately back the tool. Resolve air supply issues before resuming work.
Troubleshooting:
- Machine does not work: Check cable connection and air supply device installation.
- Machine waves when working: Check expansion screw, ensure correct expanding block size, and tighten cutter screw.
- Working face not good: Sharpen or replace dull/damaged bevel tool bit.
- Air Motor weak: Replace worn motor vane (blade).
- Air Motor does not work: Clean dirt jams, address rusted parts, and use air treatment (filter/regulator/lubricator).
- Electric motor burnt out: Replace motor rotor/stator or complete motor if caused by scrap-iron/water ingress, unsteady power voltage, or dull tool bit leading to high load.
The machine is packaged in a portable heavy-duty plastic case, including the machine, expanding blocks, beveling tools, O-rings, tools, an operation manual, and a packing list. A 12-month free warranty is provided from the date of shipment, with spare parts charged at cost price beyond this period. The warranty does not cover improper operations, self-maintenance damage, force majeure/transport damage, or cases where the warranty certificate cannot be presented.
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